Abstract: The specification discloses a wheeled multi functional vehicle or chair for therapeutic and rehabilitative use by invalids and others having muscular and neurological disability. The vehicle is characterized by a frame on which is supported independently adjustable elements including a seat, back support, an activity table, foot support, and associated limb positioning and restraining elements. Also disclosed is a unique locking apparatus for adjustable positioning and attachment of the various elements.This invention is directed to an apparatus or device for the treatment and normalization of individuals both infant and adult, who are physically handicapped by reason of muscular or neorological trauma. More particularly, it is directed to a multi-positional vehicle of the walker-perambulator type capable of functions essential to the care, normalization and treatment of patients suffering from cerebral palsy and similar conditions.